functie alle vezels: adductie, interne rotatie en elevatie geforceerde inhalatie
pars clavicularis
Origo: clavicula (mediale helft)
Insertie: humerus, crista tuberculi majoris (greater tubercle of humeris)
Functie: flexie schouder (g/h gewricht) en horizontale adductie schouder.
2
, pars abdominalis
Origo: blad van de schede van de
m.rectus abdominis
Insertie: humerus, crista tuberculi
majoris
Functie: zoals hierboven beschreven
pars sternocostalis
Origo: sternum cartilages costales 1-6
Insertie: humerus, crista tuberculi
majoris (greater tubercle of humeris)
Functie: flexie en assisteren respiratie
bij gefixeerde schouder
m. pectoralis minor
Origo: costae III-V
Insertie: procc. corcoideus scapulae
Functie: depressie, protractie, abductie en
neerwaartse rotatie scapulae. Hulpspier respiratie
door elevatie thorax. Rotatie inferior van cavitas
glenoidalis.
m. trapezius
Hele spier stabiliseert de scapula op de thorax
Ascendens
Origo: procc. spinosi T5-T12
Insertie: spina scapulae
Functie: depressie van scapula, stabilisatie scapula op thorax
3
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